The news outlet reportedly quoted a 'security source' claiming the killer answered "ISIS call to target citizens of the #coalition."

The name of the knife-wielding fanatic has still not been confirmed.

A statement from A'maq read: "The perpetrator of the attacks yesterday in front of the British parliament in London is an Islamic State soldier and he carried out the operation in response to calls to target citizens of the coalition."

A graphic showing how the attack developed and came to a halt when cops shot and killed the terrorist

"We meet here, in the oldest of all parliaments, because we know that democracy and the values it entails will always prevail," she said.

"A terrorist came to the place where people of all nationalities and cultures gather what it means to be free and he took out his rage indiscriminately against innocent men, women and children," said May.

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